The invention provides a method for achieving time-
interleaving and time-deinterleaving in an NGB-W communication
system. The method mainly comprises the following steps: time-
interleaving parameters required for achieving time-
interleaving and eliminating time-interleaving in the NGB-W communication
system are added into a
physical layer L1 post-signaling region, a transmitting end completes time-interleaving of data of a
physical layer pipe (PLP) within each NGB-W frame according to the time-interleaving parameters, a receiving end acquires time-interleaving parameters of the
physical layer pipe (PLP) within each NGB-W frame by demodulating an L1 post-signaling to complete time-deinterleaving of data of the corresponding physical layer
pipe (PLP) within each NGB-W frame. Compared with the prior art, through the adoption of the method, the effect of uniform or non-uniform time-interleaving inter-frame
convolution-interleaving and intra-frame interleaving
cascade of unchangeable or changeable input rate data can be achieved, the achieving of a
cascade-type time-interleaving plan by the NGB-W communication
system is guaranteed, and meanwhile, the flexibility of achieving time-interleaving of the NGB-W communication system is improved.